Dental hot-air-syringe outlet



June 23, 1925. 1,543,579

VV. J. LI\LJE]Q DENTAL HOT AIR SYRINGE OUTLET Filed Oct. 3. 1921ghvehl'oz v WJLauer Patented June 23, 1925.

UNIT-ED, STATES WILLIAM J. LAUER, or ARGYLE, MINNESOTA.-

DENTAL HOT-AIR-SYRINGE OUTLET."

Application filed October 3, 1921.

To all whom it may concern:

Be it known that I, WILLIAM J. LAUER, a citizen of the United States,residing at Argyle, in the county of Marshall and State of Minnesota,have invented certain new and useful Improvements in a Dental Hot-Air-Syringe Outlet; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

This invention relates to an outlet means for hot air dental syringes.

The main object is to provide a construction wherein the outlet nozzletube or part which carries the hot air point and enters the mouth of thepatient cannot burn the mouth if such tube should accidentally con tactwith the mouth.

Another object is to provide a construction having a mouth-entering tubeor the equivalent made from a material substantially non-conductive toheat, substantially unignitable and yet strong and durable, for instancebakelite, to which tube the hot air point is preferably slidably andfrictionally connected to overcome the use of screw threads.

Additional objects and advantages will become apparent from aconsideration of the description following taken in connection withaccompanying drawings illustratting one practical embodiment.

In said drawings:

Figure 1 is a side elevation of the improvements Figure 2 is a sideelevation taken at a right angle to Figure 1, and

Figure 3 is a detail longitudinal sect-ion on line 3-3 of Figure 1.

Throughout the drawings like reference characters designate like orsimilar parts.

As shown inthe drawings, a tube 4 and a hot air point 5 form the outletmeans which lead from a hot air dental syringe and which parts in useare necessarily insertible into the mouth of the patient.

Said hot air point or nozzle 5 is of any desired construction having apassageway therethrough for hot air and with its lower end flaredoutwardly at 6 to provide a substantially conical inner wall at 7 Thenozzle proper preferably extends at a right Serial No. 505,079.

angle to the end 6 as usual. This hot air point or nozzle may be made ofany suitable material, preferably metal.

Tube 4 is made of a desired material which is substantially anon-conductor to lower end has an attaching nipple or other means as at8 for connection to the syringe proper or a tube or conduit extendingtherefrom. The opposite end of the tube 4 is reduced to provide ashoulder 9 and a conical projection 10 rising therefrom. The conicalprojection 10 engages the conical wall 7 friction-tight in order toattach the tube and the hot air point 5. The lower end of the flaredportion 6 is engageablewith the shoulder 9 as will be understood. Due tothe frictional joint, the tube 4 and hot air point may be attached anddetached simply by sliding movement, the hot air point may be disposedat any angle relative to the axis of the tube 4, and the use of screwthreads to connect the parts is avoided.

Due to my improved construction, it will be realized that the'tube 4when inserted in the mouth of the patient, will not burn the month if itshould contact therewith, as accidentally occurs quite often in actualpractice.

It is to be understood that I have shown but a single embodiment of theinvention and that changes therein may be made within the spirit andscope of the invention.

I claim as my invention 7 An outlet means for dental hot air syringescomprising a tube a relatively small hot air point mounted on said tubeand having a hollow substantially conical portion, the longitudinal axisof said hot air point being perpendicular to the longitudinal axis ofthe tube, said tube being of substantially non-heat-conducting materialand adapted for insertion into the patients mouth, said tube having anipple at one end integral with it for connect-ion with a means of hotair supply, said point having an elbow integral therewith and extendingfrom tapered with said joint forming the frus- 10 the base of said pointand of less diameter tum.

than said base and exteriorly and detach- In testimony whereof I afiixmy signature ably connected to the other end of the tube thereto inpresence of two Witnesses.

on a plane intersecting said base whereby T I j the tube only maycontact with the mouth VILLIAM LAULB' through movement of the patient,the outer Witnesses: surface of said nozzle and said tube being J. E.KURoWsKL flush at their joints, and the tube being D. E. LAURIN.

